Federal agents said the Romanian nationals were retrieving their skimming device that was able to obtain credit/debit card numbers and pin numbers off an automated postal machine in the lobby of the McKnight Road office.

At least 21 PNC accounts ended up compromised and PNC Bank became aware of the suspicious activity and then alerted authorities.

Investigators said they found the other a skimming device at a post office in Squirrel Hill.

Postal inspectors and Secret Service agents arrested Carligeriu, 19, and Popescu, 31, as they left the post office carrying a “skimmer” device that reads the electronic strips on debit cards and a small camera used to record people entering their PIN numbers, according to an affidavit by Postal Inspector Dave Anderchak.

The same kinds of devices also saw use on kiosks at the Murray Avenue and McKnight Road post offices in June and Carligeriu resembles the person captured in ATM machine surveillance photos when fake cards ended up used to access the customer accounts, the affidavit said.

The criminal complaint filed by Assistant U.S. Attorney Greg Melucci charges the men with conspiracy, wire fraud, bank fraud, identify theft and access device fraud. They are currently in the custody of Homeland Security, according to the affidavit.